OK, let's crack this. We're given 627 and our task is to multiply it by 39. Essentially, we'll be adding 627 to itself 39 times.
Step 1: 0 + 627 = 627
Step 2: 627 + 627 = 1254
Step 3: 1254 + 627 = 1881
Step 4: 1881 + 627 = 2508
Step 5: 2508 + 627 = 3135
Step 6: 3135 + 627 = 3762
Step 7: 3762 + 627 = 4389
Step 8: 4389 + 627 = 5016
Step 9: 5016 + 627 = 5643
Step 10: 5643 + 627 = 6270
Step 11: 6270 + 627 = 6897
Step 12: 6897 + 627 = 7524
Step 13: 7524 + 627 = 8151
Step 14: 8151 + 627 = 8778
Step 15: 8778 + 627 = 9405
Step 16: 9405 + 627 = 10032
Step 17: 10032 + 627 = 10659
Step 18: 10659 + 627 = 11286
Step 19: 11286 + 627 = 11913
Step 20: 11913 + 627 = 12540
Step 21: 12540 + 627 = 13167
Step 22: 13167 + 627 = 13794
Step 23: 13794 + 627 = 14421
Step 24: 14421 + 627 = 15048
Step 25: 15048 + 627 = 15675
Step 26: 15675 + 627 = 16302
Step 27: 16302 + 627 = 16929
Step 28: 16929 + 627 = 17556
Step 29: 17556 + 627 = 18183
Step 30: 18183 + 627 = 18810
Step 31: 18810 + 627 = 19437
Step 32: 19437 + 627 = 20064
Step 33: 20064 + 627 = 20691
Step 34: 20691 + 627 = 21318
Step 35: 21318 + 627 = 21945
Step 36: 21945 + 627 = 22572
Step 37: 22572 + 627 = 23199
Step 38: 23199 + 627 = 23826
Step 39: 23826 + 627 = 24453

So, 627*39 = 24453